aboutsummaryrefslogtreecommitdiff
path: root/src/Data/Array/Nested
diff options
context:
space:
mode:
Diffstat (limited to 'src/Data/Array/Nested')
-rw-r--r--src/Data/Array/Nested/Convert.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/Data/Array/Nested/Convert.hs b/src/Data/Array/Nested/Convert.hs
index cea2489..d07bab9 100644
--- a/src/Data/Array/Nested/Convert.hs
+++ b/src/Data/Array/Nested/Convert.hs
@@ -3,6 +3,7 @@
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE StandaloneDeriving #-}
{-# LANGUAGE TypeAbstractions #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeOperators #-}
@@ -150,6 +151,7 @@ data Castable a b where
=> Castable (Mixed sh a, Mixed sh b) (Mixed sh (a, b))
CastUnzip :: (Elt a, Elt b)
=> Castable (Mixed sh (a, b)) (Mixed sh a, Mixed sh b)
+deriving instance Show (Castable a b)
instance Category Castable where
id = CastId